Thialysine N-epsilon-acetyltransferase

Definition:

Catalyzes the N-acetylation of the amino acid thialysine (S-(2-aminoethyl)-L-cysteine), a L-lysine analog with the 4-methylene group substituted with a sulfur. May also catalyze acetylation of polyamines, such as norspermidine, spermidine or spermine. However, ability to acetylate polyamines is weak, suggesting that it does not act as a diamine acetyltransferase in vivo.

References:

[1]. Ying Chen, et al. Genomic identification and biochemical characterization of a second spermidine/spermine N1-acetyltransferase. Biochem J. 2003 Aug 1;373(Pt 3):661-7. [Content Brief]

[2]. Catherine S Coleman, et al. Spermidine/spermine-N1-acetyltransferase-2 (SSAT2) acetylates thialysine and is not involved in polyamine metabolism. Biochem J. 2004 Nov 15;384(Pt 1):139-48. [Content Brief]

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